Some caveats: (1) this is not a top 10 sci-fi novels of all time, nor is it my favorite 10 sci-fi novels; (2) I haven't read all of these (in particular, I haven't read #7, and #5 is waiting on my shelf); (3) I totally cheated because I couldn't pick just 10, so I'm giving you some options.
Without further ado, here's my list of 10 (or more) novels any sci-fi fan should read:
- Journey to the Center of the Earth, From the Earth to the Moon, 20,000 Leagues Under the Sea, or Around the World in Eighty Days by Jules Verne. The first father of science fiction, Verne thought of things that didn't happen for 100 years, but they happened. That's like the heart of science fiction.
- The War of the Worlds, The Invisible Man, or The Time Machine by H. G. Wells. The second father of science fiction. Apparently also the father of table top war games.
- 1984 by George Orwell or Brave New World by Aldous Huxley. Classics in dystopian fiction. Really, you ought to read both.
- Dune by Frank Herbert. I consider Dune to be the Lord of the Rings of science fiction, largely for its scope and themes. Unlike the other novels above, Dune is more about the characters and the story than the science. It's one of the best examples of what character-driven, epic sci-fi can be.
- The Foundation trilogy by Isaac Asimov. As mentioned, I haven't read these yet, but they're on my shelf. I have read very little Asimov, and I know this series is a must from a great science fiction author.
- The Martian Chronicles by Ray Bradbury or Red Planet by Robert Heinlein. If Wells and Verne are fathers of sci-fi, Bradbury and Heinlein are like their sons, or grandsons or something. These two classics explore the colonization of Mars before we realized there was nothing on it. (Alternatively, try Heinlein's Stranger in a Strange Land).
- Neuromancer by William Gibson or Snow Crash by Neal Stephenson. I haven't read either, but I've heard so much about them that I want to read both. Both books deal with the idea of cyberspace before "cyberspace" was a word my mom used. A lot of ideas seen in sci-fi since have come out of these stories.
- Ender's Game by Orson Scott Card. I couldn't make a list of sci-fi books without mentioning my very favorite. Like Dune, Ender's Game is more about the characters and psychology than it is about science, but that doesn't make it any less scientific. I don't care if you're a sci-fi fan or not, you have to read this book.
- The Giver by Lois Lowry. More dystopian fiction, but more contemporary and accessible than either Orwell or Huxley. Plus, I have a soft spot in my heart for young adult fiction. It's a good book. Try it out.
- Hitchhiker's Guide to the Galaxy by Douglas Adams. One thing about science fiction is that it's often really, really serious. Adams takes care of that, and I think any fan of sci-fi ought to be exposed to the funnier side of the genre.